All you should say is that they are those who have not been focused on.

on the spot for supporting the independence of young people

While examining the actual conditions of youth employment, labor economist, Yuji Genda noticed that there were "people without work" who were neither a part-timer nor unemployed, but worried over
how to define them precisely. When he told supporters about it at the study session, an experienced supporter said, "You don't need definition," and continued like the title words. Those
words mean that it's a big job even to make the existence of people who are there but are not seen visible. From "There Is No Rank In Human Beings."